A bullet of mass m, moving with a velocity u stikes a suspended wooden block of mass M. If the block rises to a height h , the initial velocity will be given by .

Options

A. `sqrt(2gh)`
B. `((M+m)/m)sqrt(2gh)`
C. `(m/(M+m))sqrt(2gh)`
D. `((M+m)/(M-m))sqrt(2gh)`

Answer

B